Clean Prefetch Folder to Improve Windows Performance

by on March 21st, 2010

It is necessary to wash and clean system registry and TEMP files for Windows periodically to retain maximum performance. Prefetch is a very useful technique in Windows. After using Windows after some time, the prefetch folder can get full of rarely used or obsolete links and data which will slow down your computer noticeably. Here is how you can increase your system performance by cleaning prefetch folder.

Go to C:\WINDOWS\Prefetch
Delete all files
Do this once in a month

Note: Deleting prefetch files too often (Every reboot) can decrease system performance!

5 Reviews

  1. DrDOS says:

    Is the %windir%\prefetch EVER to be deleted? Are you having a problem that steers you to prefetch? You should not EVER just delete files from your computer especially from folders you did not create or are part of your operating system. Ask a professional if you are not sure. After all, it is YOUR computer. Would you drive your car into a wall? Having said all that, delete away. Make sure Task Scheduler service is running (Auto), and reboot your computer a few times. Use it normally. Expect it to be SLOW! It will improve as files populate this folder and the file layout.ini is created. Hopefully the issue you started with (why you removed these files) doesn’t reappear. If it does, consult a professional as you may have more going on, i.e. a virus or other corruption.
    Hope this is helpful!

  2. RT says:

    I’ve been screwing around with my laptop for several days after having a couple of new install programs get hosed up in the middle of download/install processes. From there, all reboots were slow and kept getting “Super Prefetch Not Working” messages followed by “Host Process for windows services stopped working and was closed” messages. Performance was bad and each reboot would keep giving me these 2 messages sporadically with slow performance.

    I ran across this post about clearing out the Prefetch folder (including readyboot folder within Prefetch folder) and everything is GREAT now.

    Performance back to normal and no more MS error messages.

    So, I vote for “folk lore” or “proof in the pudding” or whatever…

    It worked for me and I did nothing else that could have masked my results.

  3. Hiroshi says:

    @david bruce: I am sorry. What kind of problems can it cause? Prefetch is temp data, isn’t it?

  4. david bruce says:

    most google hits, particularly those written by MS, say this response if folk lore, or is it bu** sh*t? There is no reason to delete the contents of prefetch. if the layout file gets deleted that can cause another problem, too. From someone appearing to be selling tools to deal with Windows performance, I would think you would check your facts before giving absurd advice.